Pump



March l, 1938. v. SANTARELLI ET AL PUMP Filed Aug. 19, 1936 ATTORNEY.

Patented Mar. 1, 1938 uNiTeo STATES PATENT oFF1ct:y

annum:

Vincent- Santarelli and John Giacobbe,-

Detroit, Mich. application August. 19, 1936, serialr No. 96,824'

2' claims. (o1. 10a-21:85).

Ourinventi'on relates: to al new and usefuly improvement ina pumping mechanism and particu:l larly that: type of:A pumpingl mechanism adapted for use in. pumping liquids from reservoirs, con-- tainersi, and'v the like and the inventiorrparticularly lends. itselt foru'se.- on pur-r1poperatedA spray mechanisms;

It isan object ot the present invention toprovide in a spray mechanism a pumping arrangement, soconstructedand arranged, that the liquid* passes into a welll or sunkencharnber and from there is forced by1 the pumping n'ieehanismy to an outlet conduit. Devices ot the general type referred to have been useldand are wellknown and particularly the type in* which areciprocating plunger rides in the wel-l.` With the types or construction which are well-known, the reciprocating plunger', on its backward movement,Y is. withdrawn entirelyr trom the well in order to permit the flow of liquid: into# the welll sothat, upon: 11e-entry of the plunger into the well, the liquid entrapped therein be iorced outwardly from the proper conduits..

objectionable tea-ture ifs that the pumping plunger may'n'otbe properly alined with the welll, so thatits: reeentry into. the' welli will? be retarded. and the pump plunger subjected to considerable excessive air; Thiaisv due-to thetact that the well is of such an inside. diameter'throughout4 itslength as to snugly nt. the plunger and since the.- plunger snugly nts the well throughout itsv length, it is necessary that the.` plungerv be. withdrawn; from the: well to permit, the flow o?. liquid. into: the Well. To overcome this disadvantage is one of the objects of` the,V present invention and it is overcome by forming the well of av greater length than the stroke of the plunger and enlarging the upper end of the well so that when the plunger enters the enlarged portion of the well, considerable clearance will be present around the plunger to permit ow of liquid into the well. Since the plunger is not withdrawn from the well and since the enlarged portion is tapered gradually to the smaller portion, which snugly iits the plunger, even though the pumping mechanism might not be properly alined with the well, the plunger will enter into snug engagement with the smaller portion of the well easily and without being subjected to excessive wear.

Another object of the invention is the provision of a simple and inexpensive valve mechanism which may be easily and quickly removed and replaced, which will function in a very eicient manner and which, when removed, will permit access to the interior or the pumping mechanism.

Another object of the present invention is the provision in a device of this kind of an agitator which will serve to agitato the liquidi during the pumping. operation' so that when solutions are used?, af settling of' the dissolved material to the 5 bottom of the tank will bey prevented.

Other objects will' appear hereinafter.

The invention consists. in the combination of parts hereinafter described and claimed.

Theinventiorr will be understood by a reference l0. tothe accompanying drawing which forms a part of this specification and inwhich:

Fig; l is a top. plan view oi" a spray embodying the invention. 'l

Fig'. 2r is a. rear elevational view with parts 15. broken away and parts; shown in section'.

Eig; 3 is a central sectional viewl through the pumping. mechanism, enlarged, and with parts broken away.

In the drawing, I' have illustrated the invention 20 used with atank 'l inthe top. 8'- of Vwhich there is formed' an opening in which is positioned' the sleeve 9.', carrying the screen IU; A cover I Il serves as a. closure. for the opening so that material deposited'in the tank may be screened through the 25 screen I0 and thus the passage of large particles of solidi matter into; the tank would be prevented. An` elevated bottom I I is.` formed on the tank and secured: to; and, projecting downwardly from the bottom oni one side thereof, is a well, the lower 3()y portion I2 of which is of" smaller inside diameter than the; upper portion Il3, these portions: cornmunicating by the inclined wall I4. Mounted in the top 8?, in alinement with the well, is a guide sleeve t5, through. which isV slidabl'y pro- 35 jected the pump barrel I6fy on which is xedly mounted a head I'I. This head I1 is provided with a boss I8, through which is projected the angularly turned portion I9 of the pump rod 20. Cotter pins 2l serve to retain the portion I9, projected through the boss I 8. The lower end of the rod 20 is attached to the lever 22, intermediate its ends. This lever is pivoted on the pin 23, projected through the bracket 24, which is mounted on the tank l. 'I'he pin 23 projects through one 45 end of the lever 22 and the opposite end 25 is angularly turned to provide a gripping portion whereby the operator may grip the lever 22 and rock it on its pivot pin 23 to effect a reciprocation of the barrel I6. The barrel I6 is provided 50 with a reduced tapered portion 26, which enters the well and carries the threaded end 21, in which is threaded one end of the plunger 28. This plunger has the portion 29, which is adapted to snugly engage the inner surface of the smaller 55 portion I2 of the well. An opening 30 is formed in the lower end of the plunger and closed by the ball 3l, acting as a valve, this ball tting in the pocket 32, formed in the plunger. Its removal from the pocket 32 is prevented by wires 33, which are welded or otherwise suitably secured so as toextend across the pocket 32 at the upper end thereof. Thus, liquid entering through the opening 3), will raise the ball 3| fromits seat and may be permitted to pass into the interior of the barrel I6. Extended longitudinally of the barrel I6, is an outlet pipe 34, which terminates adjacent the lower end of the tubular portion 26 and which is secured at its upper end to the head I'I in communication with an outlet passage 35 which also passes through the nipple 36, to which one end of the flexible hose or conduit 3l may be attached. This hose is connected through the valve 38 to the rigid pipe 39, which serves asa gripping portion for the operator and which carries the spray nozzle 40.

In operation, a rocking of the lever 22 will effect, a reciprocation of the barrel IB, which will serve to raise the plunger into the enlarged portion I3 of thefwell, so that liquid in the tank will flow into the well and ll it. lIt will be noted that the plunger ydoes not withdraw from the well but merely enters the enlarged portion so that on the return or power stroke it is guided, positively, into the small portion I 2 and as` it moves downwardly in the small portion, lthe liquidtrapped therein, will be forced into the barrel I6, from which it will pass into the pipe 34 and through the passage 35 into conduit or hose 31. Thus 4a failure of the plunger to enter the well is prevented and excessive wear of the plunger is prevented. Moreover, since this type of construction aiords a positive guiding of the plunger into the well, the plunger may be formed from metal. It will also be noted that when the plunger is unscrewed from the threaded portionl 2l, access to the threaded barrel I@ isaiorded, thus facilitating a cleaning of the interior of the vbarrel I6 and affording access to the tube 34, so that it may be also cleaned, while the head Il may be permanently mounted on the barrel I6.

In order that the liquid may be constantly agitated and the deposit of sediment prevented, we mount an agitating arm 4I on the barrel I6 by means of the clamp 42. Consequently, since the arm 4I moves with the barrel I6, it serves to constantly agitate the liquid being pumped from the tank.

- While we have illustrated and described the preferred form of construction, we do not wish to limit ourselves to the precise details of strucktapered portion being threaded;

ture shown, but desire to avail ourselvesof such variations and modieations as may come within the scope of the appended claims.

Having thus described our invention, what we claim as new and desire 'to secure by Letters Patent is:

l. A pumping mechanism of the class described, comprising: a liquid-receiving receptacle; a well projecting outwardly below the bottom of said receptacle, said well comprising an upper and a lower portion, said upper portion being of greater diameter than said lower portion and arranged concentric of said lower portion, and said lower portion being connected thereto by an inclined wall; a top on said receptacle; a guide sleeve mounted in said top in alignment with said well; a pumping barrel slideably projected through said guide sleeve; a tapered portion on the lower end of said barrel extending into said well, said tapered portion being threaded;and a plunger threaded on said threaded portion and extending into said well; means for reciprocating said barrel, said plunger upon reciprocation of said barrel in one direction moving from the larger portion of said well into the smaller portion and upon reciprocation in the opposite direction moving from the smaller portion of said well into the larger portion, said plunger being non-retractable romsaid larger portion of said well.

2. A pumping mechanism of the class described, comprising: a liquid-receiving receptacle; a well projecting outwardly below the bottom of said receptacle, said well comprising an upper and a lower portion, said upper portion being of greater diameter than said lower portion and arranged concentric of said lower portion, and said lower portion being connected thereto by an inclined wall; a top on said receptacle; a guide sleeve` mounted in said top in alignment with said well; a pumping barrel slidably projected through said. guide sleeve; a tapered portion on the lower end of said barrel extending into said well, said a plunger threaded on said threaded portion said plunger being of size for snugly engaging in the lower portion of said well, said plunger having a pocket formed therein and provided with an opening leading into said pocket, said pocket being in communication with the interior of said barrel, a ball in said pocket for closing said opening; and diametrically extending means on said plunger extending across said pocket for preventing movement of said ball from said pocket into said barrel.

VINCENT SANTARELLI. JOHN GIACOBBE. 

